deno.land / std@0.166.0 / encoding / varint / _wasm / src / lib.rs

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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.use wasm_bindgen::prelude::*;
#[wasm_bindgen]pub fn encode_u32(val: u32) -> Vec<u8> { encode_u64(val as u64)}
#[wasm_bindgen]pub fn encode_u64(mut val: u64) -> Vec<u8> { let mut buff = Vec::with_capacity(10); loop { // If MSB == 0 if (val & !0x7F) == 0 { buff.push(val as u8); break; } buff.push((val & 0x7F | 0x80) as u8); val >>= 7; }
buff}
#[wasm_bindgen]pub fn decode_u32(buff: Vec<u8>) -> u32 { decode_u64(buff) as u32}
#[wasm_bindgen]pub fn decode_u64(buff: Vec<u8>) -> u64 { let mut value: u64 = 0; let mut length = 0; loop { let byte = buff[length] as u64; value |= (byte & 0x7F) << (7 * length); length += 1;
if byte & 0x80 != 0x80 { break; } }
value}
std

Version Info

Tagged at
a year ago